Facing issue in RDP of lightsail machine

Hi, Security programs do not allow remote connections to your computer by default. However, it is possible to allow remote connections by opening the necessary port under the "Firewall" settings.

You may try adding and editing instance firewall rules in Amazon Lightsail https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-editing-firewall-rules

Also you can follow the below doc which walks through the process of fixing the rdp issues. https://lightsail.aws.amazon.com/ls/docs/en_us/articles/amazon-lightsail-troubleshooting-browser-based-ssh-rdp-client-connection